Brake.



H. PERROT.

BRAKE.

APPLIOATION FILED JAN.14, 1913.

Patented 001121, 1913.

2 SHEETS-SHEET 1.

'Loz'tnesses Inven'io-r:

W E m H. PERR'OT.

BRAKE APPLICATION FILED JAN. 14, 1913.

2 SHBBTBSHEET 2.

Q1? I: I I 0/ m 11/ J E srns r' HENRI Partner, on ALEXANDRIA, SCOTLAND, ASSiGNOR T ARGYLLS LIMITED, 013

- ALEXANDRIA, SCOTLAND.

BRAKE.

T73 311, Specification of: Batters Patent Patented 0 1; 21, 1913 J Application filed January 1.4, 1913; Serial- N 0. 742,047.

To all whom/it may concern:

Be it known that I, I'IENRl PERRo'r, a citizen ofthe French Republic, and residing at Alexandria, Dumbartonshire, Scotland, have invented a certain new and useful Improvement in Brakes, of which the following is a specification.

This invention relates to brakes for road vehicles and it consists in the combination of elements and features of construction hereinafter particularly described and pointed out in the claims whereby the pull on the brake-actuating rods is taken diagonal-ly' from the hubs of the front road wheels to the hubs of the rear road wheels,

' sothat liability of. side slip is avoided while the steering of thevehicle is unaffected by the braking.

In the accompanying drawings Figure 1 is an elevation and Fig. 2 is a plan, partly in section, showing the chassis of a motor road vehicle embodying the invention; Fig. 3 is a detail View of one of the hub brakes; Figs. 4: and 5 show details of the brake-controlling mechanism; Fig. 6 shows a detail of the hand brake-controlling lever; Fig. 7

is a vertical section of one of the front road wheels fitted with brake" devices including a universal joint; Fig. 8 is a plan of the parts of the universal joint taken asunder;

fF-ig. 9 is a plan of a spherical ball of the joint showing grooves therein.

Referring to the drawings, 'the hub of each of the front and rear road wheels of the vehicle is provided with a brake drum A adapted to be engaged internally by brake shoes B, Figs. 1 and 3, which shoes are pivotally mounted on a pin C and arranged to be moved outwardly, against the action of springs G, as by means of the rectangularlyshaped end portionD of a rotatable spindle E to which is fixed an arm F, so as to cause the shoes B to engage the rim of the brake drum, the arms F being all operatively connected toa foot leverI-I and to a hand lever I. The said foot lever H is freely mounted on across shaftJ and pivotally connected to the foot lever H at K is a double-armed differential or compensating lever L, Figs. 1, 2 and 4, which is slotted, at both ends. One slotted end of the lever L engages with a pin M on one arm ofa belLcrank lever J. secured to the cross shaft J and connected by means of a pull rod: 0 to the arm F adapted to actuate the shoes of the brake on the right hand front road wheel P. ,Also secured to the cross-shaft J, adjacent the end remote from the bell-crank lever Nyis a toothed sector Q, Figs. 2 and 5, which is constantly in mesh with a correspondingly toothed sector R pivoted at S and forming part of a bell-crank lever connected by means of a pull rod T to the corresponding arm F for actuating the shoes of the brake on the left handrear road wheel U. The other slotted end of said lever L engages with a pin Von a double-armed lever \V secured to one end of a tubular shaft X coaxial with, and freely mounted in relation to, the cross *shaft J, one end of said lever W terminating in a toothed sector Y, Figs. 2 and 4:, constantly. in mesh witha correspondingly toothed sector Z pivoted freely on a fixed shaft at a and forming part of a bell-crank lever 12 Which is connected by means of a pull rod 0 to the corresponding arm F for actuating the shoes of the brake on the right hand rear road wheel d, the corresponding brake on the left'hand front road wheel 65 being similarly actuated by means of a pull rod 0 connected at one end' to an arm a: fixed to the tubular shaft X at the end thereof remote from that to which the lever W is fixed. A

The hand leverI for controlling the brakes is freely mounted on the shaft a and is mo-vable relatively to a quadrant f, which quadrant is provided with teeth 9 adapted to be engaged by a manually-controlled catch device it, theboss of said lever. I and the" boss of the bell-crank lever 6 being in engagement with one another after the manner of a one-way clutch whereby all the brakes may be operated either by hand or foot, the lever I serving to maintain the brakes in engagement, by reason of the catch device h connected therewith engaging the teeth of the quadrant f. v

To allow for the movement of the front road wheels in steering, the articulation in, each of the corresponding brake-actuating spindles E is made, in the vicinity of-the brake drums, as at E and E in the form of a universal joint having its center arranged to coincide with the point of intersection of the axes of the rectangularly shaped pin portion D and the adjacent steering wheel pivot m. a

The universal point at E and E may comprise, as shown in Figs. 7 to 9, a spherical ball 2' having circumferential grooves j while the other groove 3' is engaged by a which intersect each other, as shown in Fig. 9. Oneof said grooves j is freely en aged by the forked or bifurcated outer end%) of the pin D which engages the brake shoes. B,

' similar fork E onthe adjacent end of the" spindle E. The engaging parts of the joint The inner end of the spindle E is connected up to its corresponding brake-operating arm F on the chassis so that it may slide or rock -relatively thereto within certain limits to accommodate the movement of the vehicle springs. For this purpose the inner end of.

the spindle E may pass through an aperture 9 in the frame ofthe chassis and. be provided with a spherical collar 1. This collar may be mounted loosely on the spindle E and is located in a bearing 8 of corresponding shape secured to the frame "of the chassis. The spindle E may be left free to slide through the collar 7' while the brakeoperating lever F is keyed to the projecting inner end of said spindle E, as shown in Fig.7.

As shown in Figs. 2 and 6, the bossof the hand lever I is formed with a gap enteredby a projection 25 extending from the boss at of the bell-crank lever b, the face '2) of said projection normally engaging a corresponding facee on the boss of the hand lever I and clearance being afforded at 'w, whereby the hand lever I may impart rotary movement to the shafts J and X, throughathe intermediary of the toothed sectors Z, Y, levers W, L, and N and relative connections, and thereby apply the brakes while .the clearance at w permits the opposite iface y I on the projection t to be brought against, or

in close proximity to, the face 2 on the boss u, when the brakes are applied by means of the,foot lever H and relative connections,

whereupon the hand lever I may be moved inthe direction of the arrow, Fig. 6, relatively to the quadrant f, as aforesaid, until the face '1) on said projection is engaged by the corresponding face- '0 on the boss '11, the brakes being-thus maintainedin engages ment. It will be understood that when the foot lever is actuated, the hand lever isnot disturbed, the clutch members moving apart.

It will of course be understood that should for any reason one pair of diagonally disposed brakes fail to act, the other tpair will'still act, 6. e. in every will. be braked on both sides.

Having now described my invention what i I claim and desire to secure by Letters Patent of the vUnited States is:- v

' 1. Ina road vehicle, the combination with two front and two realr road wheels, of braking devices connected to each of said wheels, connections interposed between the braking devices of each front wheel and the braking devices'of the rear road wheel disposed at the opposite side of the vehicle, and manually controlledmeans', including a one-way clutch, adapted to actuate, said 1nterposed connections and to brake all the road wheels. I

'2. Ina road, vehicle, the combination with 'two fro nt .and two rear road wheel's, of brak ng devices connected to each of the wheels, connections interposed between the braking devices for one front wheel and the braking devices for the rear road wheel at the opposite side of the vehicle, connections interposed between the braking devices for the second front road, wheel, and, the, braking devices for the second rear road wheel, a-

lever, and devices, including a one-way .clutch, connectlng said lever with 531(10011 nectlons and adapted, on movement of said lever, to transmit'movement tosaid connec-' I mg devices.

. 3. In a road vehicle, the combination with front and rear road wheels, of braking devices connected to each of the road wheels, a rotatable cross shaft freely mounted on the vehicle, a, second crossflshaft rotatable intions and thereby to actuate all of said brak dependently of said first cross shaft, means, 1

operatively connected to .said first crossshaft and to the braking devices of one of the front road wheels and the brakingdevices of the rear road wheel disposed at the opposite side of. the vehicle in relation to said front wheel, means operatively conv nected to said; second cross shaft and to the braking devices of the other rearroad wheel and to the braking devices of the. other front road wheel, and -manually controlled devices adapted to actuate said shafts relative connections. I,

4. In a road, vehicle, the combination with I two front and two rear road wheels, of braking devices applied to the hubof each of said wheels, connections interposed between the braking devices of each front and Wheel and the braking devices of the rear road wheel disposed at the oppositesideof the vehicle, a foot lever in operative relation with said connections vand adapted 'on its movement to actuate all of said connections, .a hand lever, and means operatively connecting said hand lever with said connections. 7

5. In a road vehicle,the combination-with two front and two rear roadwheels, of braking devices connected to each of the case the vehicle wheels, connections interposed between the braking devices for each front wheel and the braking devices for the rear wheel at the opposite side of the vehicle, a foot lever in operative relation with said connections and adapted on its movement to actuate all I of said braking devices, a second lever, and

' devices for one front wheel and the braking devices for the rear road wheel at the opposite side of the vehicle, connections interposed between the braking devices for the second front road wheel and the braking devices for the second rear road wheel, a

foot lever in operative relation with said connections and adapted on its movement to actuate all of said brake devices, a hand lever, and devices including a one-way clutch connecting said hand lever with said connections and adapted on, movement of said hand lever to transmit movement to said connections and thereby to actuate allof said braking devices.

7 v In a road vehicle, the combination with front and rear road wheels, of braking devices ccnnected to each of the road wheels, a rotatable cross shaft freely mounted .on the vehicle, a rotatable tubular shaft disposed coaXially with and freely mounted in rela- 'tion to said cross shaft, means operatively connected to said crossshaft' and to the braking devices of one of the front road wheels and the braking devices of the rear road wheel disposed at the'opposite side of the vehicle in relationto said front wheel, means operatively connected to said tubular shaft andto'the braking devices of the other rear road wheel and to the braking devices of the other front road wheel, and

manually controlled devices adapted to ac- :tuate said coaxially disposed shafts and relative connections.

8. In a road vehicle, the combination with front and rear road wheels, of braking de-- in relation to saidcross shaft, a lever element movable with the cross shaft, a connection between said lever element and the 'brakingdevices of 'one of the front road wheels, a second lever element movable with the cross shaft and terminating ina toothed sector, a pivoted toothed sector in mesh with said toothed sector, a'connection between the p voted toothed sector and the braking devices of one of the rear road wheels disposed at the opposite-side of the vehicle in relation to the said front road wheel, a-lever element movable with said tubular shaft and terminating in a toothed sector, a pivoted toothed sector in mesh with the last mentioned toothed sector, a connection between the last mentioned pivoted sector and the braking devices of the other rear road Wheel, a connection between said tubular shaft and the braking devices of the other front road wheel, a 'foot' lever operatively connected to the said lastmentioned pivoted sector, a hand lever freely mounted on said cross shaft, a catch device on said hand lever, a stationary toothed quadrant adapted to be engaged by said catch device, a compensating" element freely connected to the first mentioned lever element movable with the cross shaft and to the lever and toothed sector element movable with said tubular shaft.

9. In a road vehicle, the combination with two front and two rear road wheels, of braking devices connected to each of said wheels, rotatable spindles articulated to said braking devices, connections interposed between the spindle articulated to the braking device .forone front wheel and the spindle articulated to the braking device for the rear road wheel at the opposite side of the vehicle, connections interposed between the spindle articulated to the braking device for the second front road Wheel and the spindle articulated to the braking device for the second rear road Wheel, and manually controlled lever, devices connecting said lever with said connections and adapted on movement of said lever to transmit movement to said connections and thereby to actuate all of said braking devices, asecond manually controlled lever and devices connecting said second lever with said connections.

10. Ina road vehicle, the combination with two front and two rear road wheels, of braking devices connected to each of said wheels,'rotatable spindles articulated to said braking devices, a rotatable cross shaft freely mounted on the vehicle,'a second cross shaft rotatable independently of said first cross shaft, means operatively connected to said first cross shaft and to the spindle articulated to the braking devices of one of the front road wheels-and the spindle articulated to the braking devices of the rear road Wheel disposed at the opposite side of the vehicle in relation to said front wheel, means operatively connected to said second cross shaft and to the spindle articulated to the braking devices of the other rear road wheel and to the articulated spindle of the braking devices of the other front road wheel, and manually controlled devices adapted to actuate said shafts and relative connections.

11. In a road. vehicle, the combination with two front and two rear road wheels, of 

